A series of molybdenum carbides were synthesized using the non-routine carbon source C_ 3 H_ 8 with oxide and nitride as precursors and characterized by XRD, SEM and elemental analysis. The catalytic activity measurem...A series of molybdenum carbides were synthesized using the non-routine carbon source C_ 3 H_ 8 with oxide and nitride as precursors and characterized by XRD, SEM and elemental analysis. The catalytic activity measurements of the as-prepared bulk and amorphous SiO_ 2 supported catalysts for thiophene HDS were carried out in a pulse microreactor-gas chromatography and their apparent activation energy was calculated. β-Mo_ 2 C was proved to be the most active phase, the Ea value of which was reduced by being supported on SiO_ 2 .展开更多
MCM-41 supporting CuO was prepared in the present research by immobilizing metal ions with organofunctionalized MCM-41 and subsequent ultrasonic washing and calcination.The coordination of Cu(II) with organic function...MCM-41 supporting CuO was prepared in the present research by immobilizing metal ions with organofunctionalized MCM-41 and subsequent ultrasonic washing and calcination.The coordination of Cu(II) with organic functionalized MCM-41 as well as the formation of CuO on the molecular sieve surface during the calcination process were investigated by FTIR and In-situ Drift FTIR.展开更多
文摘A series of molybdenum carbides were synthesized using the non-routine carbon source C_ 3 H_ 8 with oxide and nitride as precursors and characterized by XRD, SEM and elemental analysis. The catalytic activity measurements of the as-prepared bulk and amorphous SiO_ 2 supported catalysts for thiophene HDS were carried out in a pulse microreactor-gas chromatography and their apparent activation energy was calculated. β-Mo_ 2 C was proved to be the most active phase, the Ea value of which was reduced by being supported on SiO_ 2 .
文摘MCM-41 supporting CuO was prepared in the present research by immobilizing metal ions with organofunctionalized MCM-41 and subsequent ultrasonic washing and calcination.The coordination of Cu(II) with organic functionalized MCM-41 as well as the formation of CuO on the molecular sieve surface during the calcination process were investigated by FTIR and In-situ Drift FTIR.
